Two twin sisters, nieces of the mayor of Buissons-les-Amours, are, one very wise, the other evaporated. The lover of the second falls in love with the first whom he will marry after being forgiven for his conduct.
"Everybody is ill: you just don't know it yet". Knock, a newly arrived physician takes over a small town through fear and authority. NB : this is a different movie from the 1951 version where Louis Jouvet also plays Dr Knock.